Summary: I got this for a pc with windows 8.1 so I got no sound at all. Windows 8.1 does not process Dolby Digital Live. Before you purchase make sure your sound card and system support Dolby Digital Live. I am going to try to use a external sound card.
Summary: Had this for about 4 months before the cord starting having connection issues. While I did love it while it lasted, I wasn't expecting sudden connection issues, which were clearly because of the cord, because in certain positions the mouse would just stop working.
Summary: I've been using this for nearly a month now. I'm not having any technical problems with it at all. The colors will randomly change on both sides as well as the back icon. There is no way to control which colors it uses. The cord is braided so that's a plus. It also fits and feels nice in my hand.